Attachment-plug.



A. BOUCHERY. ATTACHMENTPLUG.

APPLICATION FILED JAN-22.1915.

I JIZZ OZZOR- QWHE Hi5 Fit AUGUST BOUCHERY, 0F BROOKLYN, NEW YORK.

ATTACHlVlENT-PLUG.

Specification of Letters Patent.

Patented Mar. 12, 1918.

Application filed January 22, 1915. Serial No. 3,701.

To all whom it may concern:

Be it known that I, Auous'r Bouclmnr, a citizen of the United States, residing in the borough of Brooklyn, in the county of Kings, city and State of New York, have invented new and useful Improvements in Attachment-Plugs, of which the following is a specification.

This invention relates to attaching plugs to engage in the commercial screw threaded socket or the like to connect electrical condoctors, and it is the object of the invention to provide an attaching plug of this character which ma be securely connectedto and disconnecte from the screw-threaded shell of a socket or the like by a lon itudinal or axial movement, and without tie necessity of rotating the plug or shell, and to provide a plug of this character which is simple in construction, having a minimum number of parts, durable and efficient in operation.

In the drawings accompanying' and forming a part of this specification,- igure 1 is a sectional side elevation of a plug illustrating an embodiment of my invention;

and

Fig. 2'is a'perspective view .of the means to secure the plugin' a socket or the like.

Similar characters of reference designate like arts throughout the different viewsof the rawing. i

The embodiment of my invention shown in the drawing comprises a block of insulating material 15, preferably circular in cross section, having a contact 16 at one end in the form of a headed screw to make electrical contact with an electric contact-inn socket or the like (not shown) and to which contact an electric current conductor 17 is connected said conductor engaging in a longitcdinai channel 18 in the block, or it may consist of a bore, extendin from the contact '16 to the opposite end of the block. A second contact in the form of a resilient finger or fingers 43 having screw threaded sections 45 are secured at one end of the block, as at 44, to extend parallel with the side of the block and engage in a longitudinal channel 20 therein, and to which contacts 43 the other electric conductor/ 21 is connected.

bottom of the socket connected to a These contacts 43 are so constructed that the ends 45'will normally spring laterally and stand away from the body portion of the plug, but this movement is limited by a flanged portion 46 at the ends and adjacent the screw threads 45 engaging over an annular flange 42 formed by an annular recess 41 in the block. The block or body portion has a cap 47 with a central opening con1- munica'ting with the block recesses 18, 2G for the passage oithe current conductors.

To connect the plug to a socket or the like It is only necessary to push the plug longitudinally into the socket, the resihent'fingers 43 readily yielding due to the inhere'n'ttension thereof and willyieldingly but' fi rmly engage with the screw threads of said socket or theilike and maintain them connected, the contact 16 engaging with the contact conductor, and the circuit being mpl with t e' screw threadcd she'll in the to which the other conductor isco "Having thus described my claim:

1. In an attachment blag-,fthetco tion of a block' of insulating m'ateiti mg atermjnal contactiiat' pnmen recess in the side; .md e resi1 ea fl constitute the other terminal c'onta 5 plug, said finger bein secured tot at one end to extend ongitudinally: block 'in line with the recess and tensio. so that the free end will spring lateralljgthe free end of the finger havin'g a part to cooperate with the block in line with'the'rec ss to limit the outward movement of the'finger, and said finger being constituted to -co; operate with the threaded shell of a socket, sutstantially as and for the purpose specifie 2. An electric attachment plug 'com'prising a block of insulating material having a contact at one end; a longitudinal recess in the side thereof; a recess in the block ;to'

' form a shoulder at .one end of the lo ligilongitudinal recess end tensioned so that a socket to retain the plug therein, subthe free end will normally spring laterally stantially as and for the purpose specified. of the block and having a flange at the free,

end to engage over the shoulder formed at AUGUST BOUCHERY' 5 the end of the longitudinal recess in the \Vitnesses: 4

block, and said band having a protruding Joux 0. SEIFERT,

part to coiiperate wit-h the screw threads of PAULA PHILIPP. 

